Interlock And Auto Bypass On Vfd Fault; Description; Settings; Wiring Example For Interlock And Auto Bypass On Vfd Fault - Siemens SED2 VFD Operating Instructions Manual

SED2 VFD Electronic Bypass Option Operating Instructions

Interlock and Auto Bypass on VFD Fault

Description

Interlock and Auto Bypass features are both active. Auto bypass now becomes auto bypass
on a VFD fault only (bypass is initiated by the SED2 Fault and this digital output must always
be programmed to VFD fault).
•
All set-up is the same as with Interlock (see the Interlock section in Application Feature
Setup).
•
Hand bypass is now initiated by SED2 Fault.
•
The Programmable Output is still used to initiate the proofing sequence.

Settings

Interlock and Auto Bypass requires that Controller board DIP
Switches 2 and 3 are set ON.
NOTE: During operation, the Auto Bypass Enabled indicator
is on steady. Also, the Interlock Start Logic Enabled
indicator is on steady.
See the Auto Bypass without Interlock on VFD Relay Output and Interlock sections for
parameter settings.
Wiring Example for
Interlock and Auto
Bypass on VFD Fault
24
DIGITAL INPUTS
Remote Start Input
Customer
Proof
DIGITAL OUTPUTS
Power to
Programmable Output, NO
Customer
Device
Siemens Building Technologies
J2
1
2
Remote Safety #1 3
4
5
Remote Safety #2
6
Interlock Start 7
8
9
10
11
12
J1
13
COM
14
NC
15
16
17
18
19
20
21
22
23
24
25
26